NAME

       slidescreen - permute the screen image like an 8-puzzle

SYNOPSIS

       slidescreen  [-display  host:display.screen] [-background color] [-grid-size pixels] [-ibw
       pixels] [-increment pixels] [-delay usecs]  [-delay2  usecs]  [-duration  secs]  [-window]
       [-root] [-install] [-visual visual] [-fps]

DESCRIPTION

       The slidescreen program takes an image, divides it into a grid, deletes a random square of
       that grid, and then randomly slides one of the neighbors of this "hole" into the hole (and
       repeat.)

       The  image  that  it manipulates will be grabbed from the portion of the screen underlying
       the window, or from the system's video input, or from a random file on disk, as  indicated
       by   the   grabDesktopImages,  grabVideoFrames,  and  chooseRandomImages  options  in  the
       ~/.xscreensaver file; see xscreensaver-demo(1) for more details.

OPTIONS

       slidescreen accepts the following options:

       -window Draw on a newly-created window.  This is the default.

       -root   Draw on the root window.

       -install
               Install a private colormap for the window.

       -visual visual
               Specify which visual to use.  Legal values are the name of a visual class, or  the
               id number (decimal or hex) of a specific visual.

       -grid-size pixels
               The size of the grid cells.  Default 70 pixels.

       -ibw pixels
               The size of the "gutter" between grid cells.  Default 4 pixel.

       -increment pixels
               How  many  pixels by which a piece should be moved when sliding to a new location.
               Default 10 pixels.

       -delay microseconds
               How much of a delay should be introduced between steps of  the  animation  of  the
               motion  of  each  segment.  Default 50000, which is 0.05 seconds.  This is closely
               related to the -increment parameter.

       -delay2 microseconds
               How much of a delay should be introduced between the end  of  the  motion  of  one
               segment and the beginning of the motion of another.  Default 1000000, which is one
               second.

       -duration seconds
               How long to run before loading a new image.  Default 120 seconds.

       -fps    Display the current frame rate and CPU load.

ENVIRONMENT

       DISPLAY to get the default host and display number.

       XENVIRONMENT
               to get the name of a resource file that overrides the global resources  stored  in
               the RESOURCE_MANAGER property.

SEE ALSO

       X(1), xscreensaver(1), xscreensaver-demo(1), xscreensaver-getimage(1)

COPYRIGHT

       Copyright © 1992 by Jamie Zawinski.  Permission to use, copy, modify, distribute, and sell
       this software and its documentation  for  any  purpose  is  hereby  granted  without  fee,
       provided that the above copyright notice appear in all copies and that both that copyright
       notice and this permission notice appear in supporting documentation.  No  representations
       are  made  about the suitability of this software for any purpose.  It is provided "as is"
       without express or implied warranty.

AUTHOR

       Jamie Zawinski <jwz@jwz.org>, 3-dec-92.